You can determine the amount of work done using a formula.

你可以通过公式来确定作功的大小。

In many instances it is necessary to consider the rate at which work is done as well as the total amount of work done.

在许多情况下，既要考虑所做的功的总量，也要考虑做功的效率。

The term of a contract may be fixed or non-fixed or fixed in terms of a certain amount of work done.

第二十条劳动合同的期限分为有固定期限、固定期限和以完成一定的工作为期限。

Cosmetic surgery experts said last night that the Angels appear to have had extraordinary amount of work done over the years - just to keep those calls for work coming in.

整容外科专家昨晚指出：为了能够保持她们的舞台生涯，三位霹雳娇娃这些年来应该做了不少整形手术。